Tune huge video frames detection threshold for GetStats googHugeFramesSent stat

Bug: none
Change-Id: I4e29c8c0e4438fb4dace56409ae4503abb598f86
Reviewed-on: https://webrtc-review.googlesource.com/c/109567
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25521}

modules/video_coding/include/video_coding_defines.h

@@ -41,7 +41,7 @@ enum {
   // |kDefaultTimingFramesDelayMs|, or if the frame is at least
   // |kDefaultOutliserFrameSizePercent| in size of average frame.
   kDefaultTimingFramesDelayMs = 200,
-  kDefaultOutlierFrameSizePercent = 250,
+  kDefaultOutlierFrameSizePercent = 500,
   // Maximum number of frames for what we store encode start timing information.
   kMaxEncodeStartTimeListSize = 50,
 };